# SK Hynix Gold P31 1TB Review (2026) The SK Hynix Gold P31 1TB is notable as the first consumer SSD to use 128-layer NAND, delivering excellent performance with industry-leading power efficiency. Quick answer: The SK Hynix Gold P31 1TB is one of the best PCIe 3.0 NVMe drives available, combining top-tier performance with industry-leading power efficiency. The fully in-house design with 128-layer NAND delivers consistent real-world results. Buy it for a laptop where battery life matters, or for any system where you want proven Gen3 performance without the Samsung price premium. ## Specifications | Specification | Value | | --- | --- | | Capacity | 1 TB | | Interface | M.2 3.0 x 4 | | Controller | SK Hynix | | Memory type | SK Hynix 128L 3D TLC | | DRAM cache | SK Hynix LPDDR4-4266 | | Sequential read | 3100 MB/s | | Sequential write | 3200 MB/s | | Random read IOPS | 570000 | | Random write IOPS | 600000 | | Endurance | 750 TBW | | MTBF | 1.5 | | Warranty | 5 years | ## Performance The SK Hynix Gold P31 1TB is rated at 3,500 MB/s sequential reads and 3,200 MB/s sequential writes. These speeds are near the PCIe 3.0 x4 ceiling and competitive with the Samsung 970 EVO Plus 1TB (3,500/3,300 MB/s) and WD Black SN750 1TB (3,470/3,000 MB/s). Random performance reaches 570,000 IOPS reads and 600,000 IOPS writes, strong numbers enabled by the 128-layer TLC NAND and LPDDR4 DRAM cache. The Gold P31 has a standout characteristic: power efficiency. Independent reviews at AnandTech, PCWorld, and Tom Hardware consistently measured lower power draw than competing drives. Under load, the Gold P31 consumes roughly 3-4 watts versus 5-7 watts for the Samsung 970 EVO Plus. This translates to measurably longer battery life in laptops, which is the Gold P31 primary differentiator. In real-world use, the Gold P31 1TB delivers fast boot times, game loading, and file transfers. The SLC cache is generous at this capacity, typically handling 20-40 GB of burst writes before transitioning to native TLC speeds around 1,500-2,000 MB/s. Independent benchmarks showed the Gold P31 matching or slightly exceeding its rated specifications, which is uncommon for SSDs. The drive performs consistently across mixed workloads without the performance dips that affect some competitors. ## Endurance, TBW & Warranty SK Hynix backs the Gold P31 with a 5-year warranty. The 1TB model is rated at 750 TBW endurance. In practical terms, writing 50 GB per day would take over 41 years to reach 750 TBW. Even power users writing 100 GB daily would need roughly 20 years. The 5-year warranty matches the industry standard for premium consumer NVMe drives. SK Hynix handles warranty through its regional service centers. The drive includes S.M.A.R.T. monitoring and a basic management utility. The 128-layer NAND architecture provides a solid endurance foundation, and the efficient controller design generates less heat, which contributes to long-term reliability. ## Pros and Cons **Pros:** - 3,500/3,200 MB/s at the PCIe 3.0 ceiling - Best-in-class power efficiency — ideal for laptops - First 128-layer TLC NAND in consumer SSDs - Fully in-house design with LPDDR4 DRAM cache - 750 TBW endurance with 5-year warranty **Cons:** - PCIe 3.0 limited — no Gen4 future-proofing - SK Hynix consumer SSD brand now Solidigm - Basic SSD management software - Less retail availability than Samsung or WD ## Verdict The SK Hynix Gold P31 1TB is one of the best PCIe 3.0 NVMe drives available, combining top-tier performance with industry-leading power efficiency. The fully in-house design with 128-layer NAND delivers consistent real-world results. Buy it for a laptop where battery life matters, or for any system where you want proven Gen3 performance without the Samsung price premium. Skip it if your system supports PCIe 4.0 and you want more headroom. Also consider that SK Hynix has rebranded its consumer SSD business as Solidigm, which may affect long-term support perception. The Gold P31 1TB is an outstanding choice for PCIe 3.0 systems and one of the few drives that genuinely excels at power efficiency. ## Frequently Asked Questions ### Is the SK Hynix Gold P31 1TB good for gaming? Yes, excellent for gaming. The 3,500 MB/s reads and 600,000 random write IOPS provide fast game loading and asset streaming. The 1TB capacity holds 8-10 modern AAA titles alongside Windows and applications. Independent reviews show the Gold P31 matching the Samsung 970 EVO Plus in game load times. The low power consumption means the drive runs cool, avoiding thermal throttling during extended gaming sessions. For desktop gaming, the Gold P31 is a top-tier PCIe 3.0 choice. ### Why is the SK Hynix Gold P31 good for laptops? The Gold P31 has industry-leading power efficiency. Independent reviews at AnandTech and PCWorld measured significantly lower power draw than competitors like the Samsung 970 EVO Plus. Under load, the Gold P31 consumes roughly 3-4 watts versus 5-7 watts for other NVMe drives. This translates to 15-30 minutes of additional battery life in typical laptop use. The single-sided M.2 2280 form factor fits thin laptops. If battery life is a priority in your laptop, the Gold P31 is the best NVMe option. ### Does the SK Hynix Gold P31 have DRAM? Yes. The Gold P31 uses SK Hynix LPDDR4-4266 DRAM, a low-power variant that contributes to the drive excellent efficiency. This is a full DRAM cache, not the Host Memory Buffer approach used by DRAM-less drives. The LPDDR4 standard draws less power than the DDR4 used in most NVMe SSDs, which is one reason the Gold P31 achieves its best-in-class power efficiency. The DRAM cache ensures consistent random I/O performance across the full capacity range. ### How does the SK Hynix Gold P31 compare to the Samsung 970 EVO Plus? Both are top-tier PCIe 3.0 drives with nearly identical peak speeds. The Samsung 970 EVO Plus 1TB is rated at 3,500/3,300 MB/s versus 3,500/3,200 MB/s for the Gold P31 — a negligible difference. In real-world benchmarks, results vary by workload with no consistent winner. The Gold P31 has a clear advantage in power efficiency, drawing roughly half the power under load. Samsung advantages include the Magician software suite, broader retail availability, and stronger brand recognition. The Gold P31 often prices lower. ### What NAND does the SK Hynix Gold P31 use? The Gold P31 uses SK Hynix 128-layer 3D TLC NAND, which was the first 128-layer NAND in a consumer SSD at launch. Higher layer counts allow more storage density per chip, which reduces cost and improves parallelization for better performance. SK Hynix manufactures the NAND in-house rather than purchasing from Samsung or Micron. The 128-layer TLC provides good endurance, fast program/erase times, and efficient operation. Combined with the in-house controller and LPDDR4 DRAM, the fully integrated design contributes to the Gold P31 consistent performance. ### Is the SK Hynix Gold P31 compatible with PS5? Physically it fits the PS5 M.2 slot and will function. However, Sony recommends PCIe 4.0 NVMe drives with 5,500+ MB/s read speeds for optimal performance. The Gold P31 is a PCIe 3.0 drive limited to 3,500 MB/s. Games will load and play without issues, but load times may be slightly longer than with PCIe 4.0 drives. The 1TB capacity is adequate for 8-10 PS5 games. If you already own a Gold P31, it is a functional PS5 upgrade. If buying new for PS5, consider a PCIe 4.0 drive instead. --- Last updated: 2026-05-17. Source: https://ssdrive.net/sk-hynix-gold-p31-1-tb